1. The standard temperature at which the hydrometer is calibrated is ?

10° C

15° C

20° C

27° C

Answer: 27° C

Explanation:


2. Mechanical weathering of soils is caused by ?

periodical temperature changes

splitting action of flowing water

splitting action of ice

all of these

Answer: all of these

Explanation:


3. For a given soil mass, the void ratio is 0.60, water content is 18 % and specific gravity of the soil particles is 2.6. The degree of saturation of the soil is ?

30%

50%

78%

82.5%

Answer: 78%

Explanation:


4. A flow net is used to determine the ?

seepage flow

seepage pressure

exit gradient

all of these

Answer: all of these

Explanation:


5. The contact pressure of rigid footing on cohesive soils is ?

more in the centre than at the edges

less in the centre than at the edges

uniform throughout

none of these

Answer: less in the centre than at the edges

Explanation:


6. The exit gradient of the seepage of water through a soil medium is the ?

slope of the flow line

slope of the equi-potential

ratio of total head to the length of seepage

ratio of the head loss to the length of seepage

Answer: ratio of the head loss to the length of seepage

Explanation:


7. The unit weight of a soil at zero air voids depends upon ?

unit weight of water

water content

specific gravity

all of these

Answer: all of these

Explanation:


8. When the particles of soil are oriented 'edge to edge' or 'edge to face' with respect to another, the soil is said to have ?

single grained structure

double grained structure

honey-combed structure

flocculent structure

Answer: flocculent structure

Explanation:


9. The angle of internal friction ?

varies with the density of sand

depends upon the amount of interloading

depends upon the particle shape and roughness

all of the above

Answer: all of the above

Explanation:


10. The settlement of a footing in sand depends upon the ?

stress deformation characteristics of sand

relative density of the sand

width of the footing

all of these

Answer: all of these

Explanation: